Desulphurization techniques have found applications since 1970s, and a considerable variety of techniques have been developed up to date. It is of great importance to the application of desulphurization techniques to large- and medium-capacity boilers that the operating costs for desulphurization need to be reduced. This paper described a desulphurization technique by use of alkaline substances contained in the cinder and bleed water from coal-fired boilers. In addition, the effects on the dissolving ratio ...